The SIONICS 11.5” Chrome Lined Barrel is a high-quality barrel that is made from 41V50 Chrome Moly Vanadium Steel. It has a medium contour, a carbine-length gas system, and a .750″ gas seat diameter. The barrel feature hand-polished feed ramps and has a 1/7 twist rate. It is also threaded 1/2×28 and is manganese phosphate coated. The barrel is magnetic particle inspected and radiograph inspected. It is pre-dimpled for easy installation of the gas block. This barrel is a great choice for a general purpose pistol or SBR.

Features:

• 11.5” Chambered in 5.56 NATO
• 41V50 CMV Steel
• Manganese Phosphate Coated
• Chrome Lined
• Medium Profile
• .750″ gas seat diameter
• 1/7 Twist Rate
• Carbine Gas System
• Magnetic Particle Inspected
• Weight: 1 Lb. 6 oz.
• Radiograph Inspected
• Threaded 1/2×28
• Hand Polished Feed Ramps
• Pre-Dimpled for easy Gas Block Installation

OPTIONAL ADD-ONS: 

• Melonite Gas Tube w/ included roll pin
• 4140 manganese phosphate coated gas block w/ included enhanced knurled set screw

Key Features of the SIONICS Upper Receivers and Barrels